<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>标题文件</title>
    <script>
        console.log('你好!');
    </script>
</head>
<body>
<h1>这是一个标题</h1>
<h1>标题</h1>
<h1>标题二</h1>
</body>
</html>